I know she ____the new song which is popular now?A.is writing B.writes C.wtote 为什么?

I know she ____the new song which is popular now?A.is writing B.writes C.wtote 为什么?
I know she ____the new song which is popular now?A.is writing B.writes C.wtote 为什么?

I know she ____the new song which is popular now?A.is writing B.writes C.wtote 为什么?
选B
因为"which is popular now"是修饰the new song的,
所以now是指the new song 现在发生的动作,不是she

c 我知道她写了那首现在很流行的新歌